Duct connector ring



FIG. 1 is a top perspective view of a duct connector ring showing our new design;

FIG. 2 is a bottom perspective view of the design of FIG. 1;

FIG. 3 is a bottom view of the design of FIG. 1;

FIG. 4 is a side view of the design of FIG. 1; and,

FIG. 5 is a top view of the design of FIG. 1. 

The ornamental design for a duct connector ring, as shown and described. 